光伏發電是未來新能源發電重要方向之一,而光伏變流器是光伏發電系統的核心。介紹一種基于微網理念的光伏變流器設計。以該變流器為核心的光伏發電系統可以看做一個小型的微網系統。該系統能根據外部電網情況,工作于并網模式和離網模式。介紹了該系統的各個組成部件的設計以及變流器主電路部分器件的選型。最后,由實驗樣機進行測試。試驗結果驗證了電路拓撲結構及控制方案的可行性,也說明了系統參數設計方法的正確性。
Abstract:
Solar Photovoltaic generation is an important direction of new energy power generation in the future,while photovoltaic converter is the core of photovoltaic generation system. This paper deals with a study on photovoltaic inverter based on the concept of microgrid. This paper describes a system whose core component is the photovoltaic inverter,can work on grid-connected mode or run independently according to the external situation. The paper simply describes the main components of the system. At last,the prototype was produced and tested. Test result has proved feasibility of circuit topology structure and controlling scheme and shown correctness of system parameters.Key words: PV inverter; microgrid; off-grid; storage battery
當今電子系統如高端處理器及記憶體,對電源的需求是趨向更低電壓、更高電流的應用。同時、對負載的反應速度也要提高。因此功率系統工程師要面對的挑戰,是要設計出符合系統要求的細小、價廉但高效率的電源系統。而這些要求都不是傳統功率架構能夠完全滿足的。Vicor提出的分比功率架構(Factorized Power Architecture FPA)以及一系列的整合功率元件,可提供革命性的功率轉換方案,應付以上提及的各項挑戰。這些功率元件稱為V•I晶片。